ACADSTAFF UGM
| Title | : | Step-like magnetoresistance change of spin-valve based sensor for direct magnetic Fe3O4/Ag hybrid nanoparticles detection |
| Author | : |
NUR AJI WIBOWO (1) Prof. Dr. Harsojo, SU., M.Sc. (2) Dr.Eng. Edi Suharyadi, S.Si., M.Eng. (3) |
| Date | : | 29 2021 |
| Keyword | : | magnetoresistance,Fe3O4 /Ag, nanoparticles magnetoresistance,Fe3O4 /Ag, nanoparticles |
| Abstract | : | A hybrid of nanomagnetic Fe3O4 and antibacterial nanomaterial such as Ag is one of the promising nanoparticles for magnetoresistance-based biosensor. Therefore, we are developing a biosensor system to quantize the biomolecule concentration via the Fe3O4/Ag nanohybrid detection using a spin-valve thin-film sensing element. In this research, Fe3O4/Ag magnetic nanohybrid was synthesized using the co-precipitation/aqua-solution method. During induced by the low magnetic field (about 10-15 Gauss), the step-like magnetoresistance change of the spin-valve sensing element was observed. Embedding of Ag on the Fe3O4 magnetic nanoparticle induces 32% of magnetization saturation reduction which successfully enhances the magnetoresistance ratio by 3%. The spin-valve thin-film sensing element exhibits the linear decreasing of the magnetoresistance ratio as the increased nanoparticle concentration of Fe3O4/Ag is attached on its surface. Furthermore, the stray-field presence from Fe3O4/Ag nanohybrid is also indicated by the switching magnetic field shifting. By linking to the specific receptor agent, the Fe3O4/Ag nanohybrid can be assigned as a biocompatible magnetic label in its merger with spin-valve thin-film for magnetic-based biosensor application. REFERENCES |
| Group of Knowledge | : | |
| Level | : | Internasional |
| Status | : |
Published
|
| No | Title | Action |
|---|---|---|
| 1 |
Wibowo_AIP_Proceeding_2346_2021.pdf
Document Type : [PAK] Full Dokumen
|
View |
| 2 |
Certificate_Contributed Speaker - NUR AJI WIBOWO.pdf
Document Type : [PAK] Sertifikat Seminar
|
View |
| 3 |
L1_Proceeding_April_Edi-SUHARYADI.pdf
Document Type :
|
View |
| 4 |
Step-like magnetoresistance change of spin-valve based sensor for direct magnetic Fe3O4_Ag hybrid nanoparticles detection.pdf
Document Type : Cek Similarity
|
View |